Handheld electrocardiogram measuring device



FIG. 1 is a front, right, top perspective view of a handheld electrocardiogram measuring device, showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a front, left, bottom perspective view thereof; and,

FIG. 9 is another front, left, bottom perspective view thereof. 

CLAIM The ornamental design for a handheld electrocardiogram measuring device, as shown and described. 